CRNImage2D.h

Go to the documentation of this file.

/* Copyright 2007-2015 Yann LEYDIER, CoReNum, INSA-Lyon
 * 
 * This file is part of libcrn.
 * 
 * libcrn is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * libcrn is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with libcrn.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * file: CRNImage2DIntPolarVector.h
 * \author Yann LEYDIER
 */

#ifndef CRNIMAGE2DINTPOLARVECTOR_HEADER
#define CRNIMAGE2DINTPOLARVECTOR_HEADER

#include <CRNImage/CRNImage.h>
#include <CRNException.h>

namespace crn
{
    template<typename T> Image<pixel::Cart2D<T>> MakeVector(const Image<T> &x, const Image<T> &y)
    {
        if ((x.GetWidth() != y.GetWidth()) || (x.GetHeight() != y.GetHeight()))
            throw ExceptionDimension("Image<pixel::Cart2D<T>> MakeVector(const Image<T> &x, const Image<T> &y): images do not have the same size.");
        auto res = Image<pixel::Cart2D<T>>(x.GetWidth(), x.GetHeight());
        for (auto tmp : Range(x))
            res.At(tmp) = {x.At(tmp), y.At(tmp)};
        return res;
    }

    template<typename R, typename T> Image<R> RhoChannel(const Image<pixel::Polar2D<R, T>> &img)
    {
        auto res = Image<R>{img.GetWidth(), img.GetHeight()};
        for (auto tmp : Range(img))
            res.At(tmp) = img.At(tmp).rho;
        return res;
    }

    template<typename R, typename T> Image<typename Unit<T>::type> ThetaChannel(const Image<pixel::Polar2D<R, T>> &img)
    {
        auto res = Image<typename Unit<T>::type>{img.GetWidth(), img.GetHeight()};
        for (auto tmp : Range(img))
            res.At(tmp) = img.At(tmp).theta.value;
        return res;
    }
}

#endif